Twyer.



No. 698,43l. Patented Apr. 29;]902.

s. K. BEHREND.

TWYER.

(Application filed Oct. 6, 1900. Renewed Jan. 27, 1902. (No Model.) 2 Sheets-Sheet I.

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No. 698,43l. Patented Apr. 29, I902,

S. K. BEHREND.

TWYEB.

(Application filed Oct. 6, 1900. Renewed Jan. 27, 1902.] (No Model.) 2 Sheets-Sheet 2.

UNITED STATES PATENT OFFICE.

SAMUEL K. BEHREND, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO HOWARD EVANS, OF PHILADELPHIA, PENNSYLVANIA.

TWYER.

SPECIFICATION forming part of Letters Patent No. 698,431, dated April 29, 1902.

Application filed October 6, 1900. Renewed January 27, 1902. Serial No. 91,515. (No model.)

To all whom it may concern.-

Be it known that I, SAMUEL K. BEHREND, a citizen of the United States of America, residing at Washington, in the District of Columbia, have invented certain new and useful Improvements in Twyers, of which the following is a specification.

My invention relates to an improvement in twyers, and more particularly to an adj ustable twyer adapted for use with the converter set forth in my concurrently-pending application for Letters Patent, Serial No. 25,434, filed July 31, 1900; and the object is to provide a suitable construction of twyer for regulating and controlling the air-blast from the wind-belt to the charge contained in the converter, and an essential feature being the regulation of the angle of discharge upon the surface of the molten mass;

In the accompanying drawings, Figure 1 is a top plan view of the twyer ring or frame. Fig. 2 is a bottom plan, and Figs. 3, 4, and 5 are enlarged details in elevation and section.

A represents the twyer ring or frame. Openings 6 6 are formed at intervals around and through the ring or frame A. This ring or frame supports the wind-belt, as shown in enlarged detail in Fig. 3. In line with the openings 6 6 are the radially-disposed hollow projections 8 8. These projections are preferably cast integral with the rings A. One face of each projection is perfectly fiat and in exact alinement with one side of each opening 6. The opening 9 or hollow interior of these projections is in communication with the wind-belt above and receives air therefrom. The outlet 10 of this opening in each projection 8 is elongated and disposed in the arc of a circle struck froma point w',located in the bottom plane of the stack.-

D D are the twyers. One of these is providcd for each opening 6, to which openings the twyers are fitted. These twyers consist of tubes for the passage of air and the segmental body portion D. One face of the seginent is fitted to the flat face of the projection 8, and the opening 11 through the twyer opens laterally at 12, whereit communicates with the orifice 10 of the fiat seat of this projection 8. A segmental slot 13 is formed in this segmental portion D, and a pair of bolts or set-screws 14 14 extend through this slot into the projection 8. A handle 15 on the outer end of the segment afiords a means for manipulating and adjusting the twyer.

From the foregoing description it will be seen that the vertical angle of each twyer may be varied independently of the others to a certain extent, defined by the vertical height of the twyer-openings 6 6, by simply loosening the bolts or set-screws 14 14 in the slot 13 and raising or lowering the handle 15, as the case may be, to the desired positionand then tightening the bolts or set-screws. The length of the orifice 10 and its disposition in the arc of a circle struck from a center coincident with or approximately coincident with the inner end of the twyer admit of this change without any interference of the air-blast, be-

cause the opening 11 through the twyer is al- Ways in communication with the orifice 10 in the twyer-seat formed on one faceof each projection 8. Thus the angle of blow or blast upon the molten mass may be varied throughout or at any given point, as the exigencies of the process of steel conversion to attain the very best results may seem to require. All or any lesser number of the twyers can be used for the blast, and those twyers which are preferably used during the process can be grouped in any desirable manner. Opposite twyers may be made to blow directly against each other or not, and all twyers may be set to have the same angle of blow, or the angle of blow may be varied in certain groups of the twyers, or itmay vary with each twyer, in the latter event producing a spiral form of the blast as directed upon the metal.

While the construction and arrangement thus quite specifically outlined are perhaps preferable, it is only one of avariety of adjustable twyers which might be employed in successfully carrying out my invention, and itis evident that slight changes might be made in the form and arrangement of the several parts described without departing from the spirit and scope of my invention, and hence I do not wish to limit myself to the exact construction herein set forth; but,

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is---- 1. The combination with the circular frame of a converter, having a plurality of holes therein, of acorresponding number of twyers, one for each hole, said twyers vertically adjustable from their inner ends as centers whereby an all-around blast of air may be directed at varying angles at a level approximately coincident with the horizontal plane in which the holes are located.

2. The combination with a twyer ring or frame having openings formed therein at intervals and provided with radially-disposed hollow projections adjacent to these openings and a wind-box in communication with and for supplying air to the projections, of twyers extending into the openings in the ring or frame, said twyers having hollow bores which open into the sides of the twyers and communicate with the hollow projections, and means'for adjusting the twyers.

3. The combination with a frame having openings formed therein, and hollow projections each having a flat face in alinement with one side of each opening, of a twyer extending into each opening and provided with a fiat surface adapted to fit the flat surface of the projection, the twyer and the projection having openings therein in communication with each other.

4. The combination with a frame having openings formed therein and hollow projections adjacent to each of said openings one face of each projection flat and in alinement with one of the openings, these fiat faces of the projections each provided withan elongated outlet, of a twyer extending into each opening, the hollow bores of the twyers opening into the elongated outlets in the projections, whereby the two are maintained in constant communication regardless of the position of the twyer.

5. The combination with a frame having a plurality of holes therein and hollow projections adjacent to the holes, of twyers having their hollow bores in constant communication with the hollow projections, said twyers each having a segmental slot formed therein and means extending through said slots into the projections for regulating the movement of twyers and securing them in various adjustments.

' 6. The combination with a wind-box and hollow projections, the interiors of which are in communication with said wind-box and provided with curved elongated orifices, of twyers each of which is provided with a segment and a handle, said segments having seg mental elongated slots, and bolts or set-screws passing through said slots into the hollow projections for securing the twyers adjustably in position, the curved orificesin these hollow projections maintaining constant communication with the twyers.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

SAML. K. BEHREND. Witnesses:

THos. L. HUNTER,

W. H. BADEN. 

